Glass-cutting machine



July 29, 1924. 1,502,990

E. J. KIEFER GLASS CUTTING MACHINE Filed Feb. 1, 1923 4 Sheets-Sheet 1veufoz Jul 29, 1924.

E. J. KIEFER GLASS CUTTING MACHINE Filed Feb. 1. 1923 4 Sheets-Sheet 3dvwentot w July 2 19% E. J. KIEFER cuss CUTTING MACHINE 4 Sheets-Shet 5Filed Feb. 1, 1923 July 29. 1924.

. E. J. KIEFER emss CUTTING MACHINE Filed Feb. 1, 1923 4 Sheets-Sheet 4I Patented July 29, 1924.

and its own axis.

' tumblers.

EDWARD J. KIEFER, OF NEW YORK N. Y.

GLASSPCUTTING MACHINE.

Application filed February 1,1923. Serial No. 616,268.

T 0 all whom it may concern:

Be it known that I, EDWARD J OHN KIEFER, a citizen of the United States,residing in borough of Queens, in the city and State of New York, haveinvented certain new and useful Improvements in Glass-Cutting Machines,of which the following is a specification, reference being had to theaccompanying drawing, forming a part hereof.

' This invention has for its object to produce an improved machine forthe rapid cutting of ornamental designs on glassware, such as tumblers.In the machine in which the resent improvements are embodied,'thetumblers, which may be taken to be the goods to be decorated, aresupported by suitable devices in a circular series upon a rotary carrierand are moved into and out of contact with a concentric grinder, eachtumbler receiving a partial rotation upon its own axis at each operationso that it shall complete a rotation upon its own axis as it completes arevolution about the axis of the grinder. By such movement the tumbleris brought into contact with the grinder in a circumferential series ofspots and will have ground upon its surface a circumferential series ofspots, the character of which will depend to some extent upon themovement and timing of the movement of the tumbler with respect to thegrinder The invention will be more fully explained hereinafter withreference to the accompanying drawings in which is illustrated a machinewhich embodies the invention in a form suited for the ornamentation ofordinary glass water In the drawings Figure 1 is a view partly inelevation and partly in vertical section of a machine which embodies theinvention.

Figure 2 is a view of the same in end elevation as seen from the righthand in Figure 1.

Figures 3. 4, 5 and 6 are detail views of one of the devices forsupporting each tumble-r on the carrier, Figure 3 being a view partly insection on a plane indicated by the broken line 33 of Figure 4:, Figure4 being a view partly in elevation and partly in section on the plane ofa radius of the carrier. Figure 5 being a view in elevation as seen fromthe right hand in Figure 4, and Figure 6 being a view in section on theplane indicated by the broken line 66 of Figure 4.

Figure 7 is a detail view of the tumblersupporting spindle and some ofits associated parts.

Figures 8 and 9 are detail views illustrating the character of theornamentation produced by the mechanism illustrated in the drawings.

In the embodiment of the invention illustrated in the drawings, thegrinder a is shown as fixed on a shaft a which is supported at one endin a bearing a on a pedestal a and as mounted on the other side of thegrinder ina sleeve 6 which in turn is supported in a bearing a on apedestal a The shaft a may have a stepped'pulley a by which the grindera may be rotated at a suitable speed. The sleeve 7) is rotatable in thebearing a and is shown as rotated at relatively slow speed from a motorI) through gears 6 worm gears 6 a shaft b and worm gears 6 At its otherend, adjacent the grinder a, the sleeve 6 has fixed thereto a disc-likecarrier 0 which is slotted radially as at 0 and is formed also withparallel slots 0 on opposite sides of the slot 0', for the convenientattachment and adjustment of the tumbler-supporting devices hereinafterdescribed. As shown, the carrier 0 is adapt-ed for the support ofeighteen tumblers, but it will be understood that the number may bevaried as the conditions of use require.

For the convenient support and adjustment of each tumbler-supportingdevice there is provided a bracket a' which is adjust-ably secured tothe carrier by bolts d which pass through the slots 0 In each bracket 03is mounted, so as to swing upon the axis ti a block e in which ismounted the rotatable spindle 7 which carries one member f of the holderfor the tumbler. The other member f is fixed on a spindle f which ismounted in a yoke or frame f. The spindle f carrying the member f of theholder, is pressed toward the tumbler,

so as to hold it firmly but yieldingly between the members f and by aspring f which bears through a spring cup 7 against a lever f pivoted onthe frame and prm vided with a latch f When the latch is disengaged fromthe frame 7 and the pressure of the lever f is removed from the spring ithe spindle f is drawn back by a spring f so as to release the tumbler.The frame 7 has a limited longitudinal movement with respect to theblock e and is held from rotation, being carried by pins f and pressednormally to the left by springs f, as shown in Figure 4.

The holder, with the tumbler, receives a step by step rotation on itsown axis for the purpose f presenting a fresh surface to the grinder,for the formation of a circumferential series of spots or punties and inthe embodiment of the invention illustrated it receives also alongitudinal movement so that a second circumferential series of puntiesmay be formed on the tumbler if desired. It will be understood that themachine is capable of adaptation for a wide variety of ornamentation,with corresponding changes in some of the details of construction of theholder and parts associated therewith. The machine chosen forillustration is adapted for the formation of two circiunferential seriesof spots or punties. as shown in Figure 9, and the devices involved inthe production of such form of ornamentation will now be described. Inproduc ing this form of ornamentation the tumbler receives two completerotations on its vown axis as it is carried in one revolution about thegrinder. receiving a longitudinal displacement after the completion of6ne circumferential series of punties so that the second circumferentialseries of punties shall be formed. The devices now-t be described aretherefore adapted for the production .of the movements of the tumblernecessary to the particular ornamentation described.

The tumbler, supported as described, is moved into and out of contactwith the grinder, receives a step by step rotation on its own axis whenout of contact with the grinder so as to present a fresh spot forcontact with the grinder, and in the embodiment of the inventionillustrated. also receives a longitudinal movement when the firstcircumferential series of punties has been formed and a slight rotarydisplacement so thata second circumferential series of punties shall beformed instaggered relation with the first series of punties.

To produce the movement of the tumbler into and out of contact with thegrinder there is secured to the fixed frame of the machine a cam tootheddisc 9 which has, in the machine shown.'thirty-six cam teeth Mounted onthe carrier 0, in proximity to each tumbler holding device, is a camlever g which, in the movement of the carrier, co-acts with the camteeth and at its other end co-acts with an adjustable stop on a stem 9which is pivotally connected at g to the block e. A spring 9 interposedbetween an adjustable stop (I on the bracket d and the block 6, movesthe block in opposition to the cam disc. Accordingly, as the carrier 0is rotated, each of the tumbler supporting devices is oscillated atintervals by the successive cam teeth g to move the tumbler, from theposition shown in Figure 1. out of contact with the grinder a. As thecam lever 9 passes beyond each tooth g the tumbler supporting device isoscillated in the opposite direction by the action of the spring 9 andthe tumbler is again moved into contact with the grinder.

While the tumbler is out of contact with the grinder it receives a stepby step rotationon its own axis throughthe devices now to be described.Mounted on the spindle f is a driving gear or ratchet h, the hub h ofwhich, in the particular embodiment shown, is slotted obliquely. as atIf, for engagement with a pin 71 which is fixed to the spindle f. Thespindle f is therefore rotated with the gear h but has a limitedmovement of rotation with respect to the gear, so that, when the spindleis moved lengthwise. as hereinafter described, the engagementof the pinwith the oblique slot effects such relative rotation of the spindlethat. as previously explained. the spots or punties of the secondcircumferential series shall be staggered in relation to the spots orpunties of the first circumferential series. The ratchetwheel 71- isengaged by a spring pressed hold pawl h, to prevent backward movement,and by a spring pressed driving pawl 71 which is carried by a slide it,mounted for longitudinal movement in ways 6' on the block 6. The slide his pressed normally toward the axis of the machine by a spring k andreceives its efiective movement, to advance the ratchet wheel h, whenthe block 0 is oscillated so as to move the tumbler out of contact withthe grinder, by contact of the slide hf with stop 03* carried by thebracket d. To insure accuracy of rotation of the tumbler on its axis,there is fixed to the spindle f a toothed indexing wheel f" whichcooperates with a fixed tooth 7. carried by the frame of the machine,when the tumbler is moved into contact with the grinder.

To effect the longitudinal movement. of the spindle f and therefore thelongitudinal displacement of the tumbler for the formation of a. secondcircumferential series of punties, there are provided the devices now tobe described.

Mounted loosely on the spindle f, near its outer end, is a ratchet wheelor gear 11 which is engaged by a hold pawl 21', to prevent backwardmovement, and by a spring pressed driving pawl i which is carried by thereciprocating slide 71- above mentioned. The ratchet wheel 2'- is shownas having twice as many teeth as the ratchet wheel h so that, in theoperation of the machine shown, the spindle f and therefore the tumblershall receive two complete rotations during the full revolution aboutthe axis of the machine,

'slotted to straddle the spindle and provided with a cam 2'. The latteris arranged for co-operation with a roller 2' which is carried by arms ihung on one of the guides 2' and is arranged for cooperation with thehead 7' of the spindle f. Carried by the bracket d, in position forco-operation with the slide bar a", is a cam 61". The slide bar 2' aswill be understood, makes contact at one end or the other, at each halfrotation of the ratchet wheel 2', with the cam d and is moved first inone direction to bring the cam 2' in contact with the roller i andtherefore to move the spindle f longitudinally to the right, therebyshifting the tumbler so that,

in the remaining half revolution. it will be brought into contact withthe grinderin a differentcircumferential line. At the same time, throughthe co-operation of the pin 72,3.

series. As the tumbler completes its second rotation and the second halfof its revolution the slide bar i will be moved in the oppositedirection, removing the cam i from contact with the roller 2' andpermitting the spindle to be moved again to the left under the influenceof the springs i on the pins f above mentioned.

As each tumbler completes a revolution it is disengaged by theattendant. from the holding devices by manipulation of the latch f andlever f and another tumbler is put in its place. As many tumblers areundergoing operation at one time it will be seen that the capacity ofthe machine is very great.

It will be understood, of course, that while tumblers are hereinmentioned for convenience in description, the machine is capable ofadaptation to the grinding of other articles. It willalso be understoodthat while, for convenience, reference has been made herein to agrinder, the precise character of attrition eifected may be other thanwhat is commonly understood as grinding. including the polishing ofarticles previously ground or cut, the term grinder as hereineniployed,being merely a convenient term for the designation of that element ofthemachine which operates on the articles treated.

1 Furthermore, although the mechanism in which the invention is embodiedis illustrat ed herein, for the sake of clearness, in a comparativelysimple form and adapted for the production of the comparatively simpleornamentation indicated, the mechanism can be adapted for the.production of various forms of ornamentation. Changes in details ofconstruction and arrangement. will therefore be made to suit thecharacter of the work to be done and it will be understood that theinvention, exceptas pointed out in the claims, is not limited to theparticular construction shown and described herein.

I claim as my invention:

1. In a machine of the character described, the combination of agrinder, a rotatable carrier concentric with the grinder, a holder forthe article to be treated mounted movably on the carrier, means formoving the holder so as to move the article to be treated into and outof contact with the grinder, and means to rotate the holder, step bystep, on its axis when the article to be treated is out of contact withthe grinder.

2. In a machine of the character described, the combination of agrinder, a rotatable carrier concentric with the grinder, a holder forthe article to be treated mounted to oscillate on the carrier, means foroscillating the holder so as to move the article to be treated into andout of contact with the grinder, and

means to rotate the holder step by step on its axis when the article tobe treated is out of contact with the grinder.

3. Ina machine of the character described, the combination of a grinder,a rotatable carrier concentric with the grinder, a holder for thearticle to be treated mounted to oscillate on the carrier, a cam discco-operating with the holder so as to move the article to be treatedinto and out of contact with the grinder, and means to rotate theholder'step by step on its axis when the article to be treated is out ofcontact with the grinder.

4. In a machine of the character described. the combination of agrinder, a carrier concentric with the grinder, a holder for the articleto be treated mounted to oscillate on the carrier, a cam lever mountedon the carrier and operatively connected to the holder, and a cam discco-operating with the cam lever.

5. In a machine of the character described, the combination of agrinder, a carrier concentric with the grinder, a holder for the articleto be treated including a spindle, and a block in which the spindle ismounted to rotate, the block being mounted to oscillate on the c arrier,means to oscillate the block, and

' means to r'otatethe spindle step by step.

A '6. In: a machine of the character described, the combination ofagrinder, a carrierconcentric with the grinder, a holder for the articleto .loetreated including a spindle, and a block in which the spindle ismounted to rotate, the block being mounted to oscillate 'on the carrier,means to oscillate the lit) block and means to effect longitudinaldisplacement of the spindle.

7. In a machine of the character described, the combination of agrinder, a carrier concentric with the grinder, a holder for the articleto be treated including a spindle,

and a block in which the spindle is mounted to rotate, the block beingmounted to oscillate on the carrier, means to oscillate the block, meansto rotate the spindle step by step, and means to efiect longitudinaldisplacement of the spindle.

8. In a machine of the character described, the combination of agrinder, a carrier concentric with the grinder, a holder for the articleto be treated including a spindle, and a block in which the spindle ismounted to rotate, the block being mounted to oscillate on the carrier,means to oscillate the block, means to rotate the spindle step by step,means to efiect longitudinal displacement of the spindle, and means toeffect relative rotary displacementof the spindle with respect to themeans for rotating the spindle.

9; In a machine of the character def scribed, the combination of agrinder, a carrier concentric with the grinder, a holder for the articleto be treated including a spindle, and a block in which the spindle ismounted to rotate, the block being mounted to oscillate on the carrier,a fixed cam disc, and a cam lever mounted on the carrier forco-operation with the cam disc and operatively connected with the block.

10. In a machine of the character described, the combination of agrinder, acarrier concentric with the grinder, a holder for the articleto be treated including a spindle, and a block in which the spindle ismounted to rotate, the block being mounted to oscillate on the carrier,means to oscillate the block, a ratchet wheel operatively connected tothe spindle, and a driving pawl therefor actuated by the oscillation ofthe block.

11. In a machine of the character described, the combination of a holderfor the article to be treated including a spindle, a driving gear'on thespindle, means to efiect rotation of the spindle through the ear, andmeans to effect relative rotary disp acement of the spindle with respectto the gear.

12. In a machine of the character described, the combination of a holderfor the article to be treated includin a spindle, a driving gear havinga hub with an oblique slot, a pin fixed in the spindle and entering Isaid slot, means to effect rotation of the spindle through the gear, andmeans to effect longitudinal movement of the spindle with respect to thegear.

13. In a machine of the character described, the combination of acarrier, a holder for the article to be treated including a spindle anda block in which thespinmosses dle is mounted to rotate, a wheel mountedloosely on the spindle, means to efiect rotation of the wheel, a camslide bar mounted on the wheel, a fixed cam for co-operation with thecam slide bar in its rotation with the wheel, and means actuated bymovement of the slide bar to effect longitudinal movement of thespindle.

14. In a machine of the character described, the combination of agrinder, a carrier concentric with the grinder, a series of holders forthe articles to be treated mounted movably on the carrier, means for moving each holder so as to move the article to be treated into and out ofcontact with the grinder, and means to rotate the several holders stepby step on their axes when the articles to be treated are out of contactwith the grinder.

15. In a machine of the character de- --scribed','the combination of agrinder, a roand cam levers mounted on the carrier for co-operation withthe cam disc and operatively connected with the holders.

16.-In a machine of the character described, the combination of agrinder, a carrier concentric with the grinder, holders for the articlesto be treated including each a spindle and a block in which the spindleis mounted to rotate, the blocks being mount ed to oscillate on thecarrier, means to oscillate the blocks to move the article to be treatedinto and out. of contact with the grinder, and means to rotate thespindles step by step.

17. In a machine of the character described, the combination of agrinder, a rotatable carrier concentric with the grinder, holders forthe articles to be treated including each a spindle and a block in whichthe spindle is mounted to rotate, the blocks being mounted to oscillateon the carrier, a fixed cam disc having a plurality of cam teeth, andcam levers mounted on the carrier for co-operation with the cam disc andoperatively connected respectively with the several blocks.

18. In a machine of the character described, the combination of agrinder, a carrier concentric with the grinder, a holder for the articleto be treated including a spindle and a block in which the spindle ismounted torotate, the block being mounted to oscillate on the carrier,means to oscillate the block, means to rotate the spindle step by step,an indexing gear secured to the spindle and a fixed indexing tooth forco-operation with the indexin gear.

19. In a machine of the c aracter described the combination of acarrier, a o holder including a spindle and a block in which the spindleis mounted to rotate, the block being mounted to oscillate on the carbarin the opposite direction.

5 rier, means to oscillate the block, a ratchet This specificationsigned this 31 day of wheel on the spindle, a slide bar on the JanuaryA. D'. 1923. block, a pawl carried by the block for 00- EDWARD J.KIEFER.

peration with the ratchet wheel, a spring to move the slide bar in onedirection, and a fixed stop to effect movement of the slide 10 I

